ruby-on-rails - Rspec，测试关联的存在

Question

我正在尝试测试一个关联。

我有这两个类:

class Survey < ActiveRecord::Base
  has_many :users, through: :users_surveys
  has_many :users_surveys

  def update_or_create_result(user_id, result, target)
    user_survey = users_surveys.find_or_create_by(user_id: params[:user_id])
    if survey_passed?(result, target)
      user_survey.completed!
    end
  end
end

class User < ActiveRecord::Base
  has_many :surveys, through: :users_surveys
  has_many :users_surveys
end

class UsersSurvey < ActiveRecord::Base
  belongs_to :user
  belongs_to :survey
end

如果创建了调查和用户之间的关联，我如何使用 RSpec 进行测试？

Answer 1

只是想强调一下，RSpec 的当前 nex 语法 is the following :

describe User do
  it { is_expected.to have_many(:surveys) } # shortcut for expect(subject).to
end

describe Survey do
  it { is_expected.to belong_to(:user) }
end

should现在被认为是多年的旧语法:)